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Diseases and Conditions

Know how to prevent, treat and control the symptoms of various diseases and medical conditions. We explain what's happening in your body when disease strikes, and what you can do to feel better faster.

Topics to Explore

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5 Diseases That Don’t Spread the Way We Used to Think

The cause of bubonic plague was a mystery until the 1890s, but that's not the only disease we've been confused about over the years. Which other illnesses have we gotten wrong?

Can I get cancer from WiFi?

We're surrounded by WiFi these days. What types of radio waves are being emitted, and should we be concerned?

Why do stomach bugs make you throw up?

Nobody likes to vomit. But it's one of the body's amazing functions that could prevent you from becoming even sicker.

Will we ever cure cancer?

An estimated 1.6 million people will be diagnosed with cancer in 2015 — just in the United States. How long until chemo isn't a fact of life for people we know?

Could washing dishes by hand lead to fewer allergies?

Sometimes life-threatening, sometimes just inconvenient, allergies won't ever win a popularity contest. While we can't eliminate them, we may be able to reduce them through a simple household trick: hand-washing the dishes!

Do underwire bras give you cancer?

Another day, another forwarded email. Today it appears your underwire bras can give you cancer. Read this article before burning your bras, ladies!

Can you get arthritis from cracking your knuckles?

Mom always said, "Don't crack your knuckles! You'll get arthritis!" It's time to separate fact from fiction once and for all, and find out if Mom was right.

Are stomach ulcers caused by stress?

"This job is giving me an ulcer!" No doubt we've all uttered those words in moments of frustration. But can a tough day at work or nonstop stress really cause an ulcer?

Does sugar 'feed' cancer cells?

Cutting out sugar from your diet may have many health benefits. But can removing the sweet stuff help get rid of cancer, too? We separate fact from fiction.

What does it mean when you’re vomiting bile?

Throwing up bile is a less-than-pleasurable experience, to put it lightly. Sometimes it feels like it may never end. Find out why it happens, what your body is trying to tell you and when you should be concerned.

Will there be new STDs in the future?

Syphilis, gonorrhea, chlamydia -- no one wants to hear those words from their doctor. Are these all we have to worry about, or are there other sexually transmitted horrors in the making?

10 Deadly Agents the CDC Works With

Modern medicine may be here, but there are still plenty of infectious diseases to combat, and the CDC is really busy doing that. Get to know 10 of these public (health) enemies.

5 Ways You Still Can't Get Ebola

You may not know how to pull on personal protection equipment like a health care pro, but we bet you've learned a lot about Ebola and its transmission since it hit the news. Or have you?

How Leper Colonies (Leprosaria) Work

Leprosy was the AIDS of the first millennium – a disfiguring disease that struck terror since people thought it was easy to contract. Patients were banished to live in colonies. What was life like there?

Is wheat toxic?

Some people in the anti-wheat movement say that the grain has compounds in it that make it addictive. But is this true?

10 Diseases That Used to Be Death Sentences

Pneumonia and diarrhea used to be bigger killers, but nowadays, developed countries can successfully treat them. Which other diseases are no longer death sentences?

5 Germs You Really Can Get From a Toilet

No one thinks public toilets are altars of tidiness, but are they actually dangerous? The odds of catching something from a public bathroom are low -- but it's possible.

How Ebola Works

You may think you know Ebola. You probably don't. The infectious disease has killed thousands in West Africa and has reappeared on the continent once again. What have scientists learned since the last outbreak?

Colon Cancer: The Silent Killer

Colorectal cancer, or colon cancer, is a common type of cancer found in both men and women. Find out what you need to know about this form cancer.

10 Worst Ways to Die

C'mon. You know you've thought about this. We have, too. Want to see how your list compares with ours?

8 Step Plan to Lower Your Cholesterol

Do you need to lower you cholesterol? Here is an eight step plan to lower your cholesterol.

Frequently Asked Questions About Proteus Syndrome

In 1998, a panel of doctors at the National Institutes of Health surmised that Joseph Merrick's affliction may have been caused by a condition known as Proteus syndrome. Find out what it is and what causes it.

Frequently Asked Questions About Forensic Pathology

Forensic pathology is a fascinating field. Take a look at frequently asked questions about forensic pathology to learn more.

Flu Symptom Checker

Flu's symptoms, from body aches to cough and fever, are legendary. But what causes all that misery? Look below to find out why you feel so awful.

Frequently Asked Questions About Neurofibromatosis

Neurofibromatosis is a genetic disorder that causes tumors to form on nerves throughout the body. Learn more about neurofibromatosis here.

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